South Korea is Asia's fourth-largest economy and depends heavily on exports. Officials on Sunday held an emergency security meeting to assess the potential economic impact of the U.S. military action.

South Korean and U.S. intelligence also believe that the North’s weapons of mass destruction (WMD) sites — including for nuclear and missile production and storage — are underground.

The U.S. military strikes in Iran are raising questions about the impact on supplies of oil and gas, including whether the widening conflict could result in higher energy prices for Americans.

South Korea is Asia's fourth-largest economy and depends heavily on exports. Officials on Sunday held an emergency security meeting to assess the potential economic impact of the U.S. military action.